Need thicker gasket

[mwaller5672]

I'm putting on my exhaust manifold and would like a gasket thicker than the fel-pro. Who sells that kind. How tight should you get the bolts
Mike

[charlie65_67]

There is really no need for gaskets on exhaust manifolds. If you doubt that, consider that the factory didn't use them either.

As for tight, the shop manual can provide a torque value. As for myself, I draw them down just snug + about 1/8 turn more.

[slim]

Is there a leak? Are the headers warped or badly rusted?

Slim

[mwaller5672]

The surfaces are a little rough

[LindenBruce]

A machine shop can surface the contact areas of the manifold. Then use clean bolts and Ultra Copper silicone sealant. Bruce

[4mustangs]

Originally Posted by mwaller5672

I'm putting on my exhaust manifold and would like a gasket thicker than the fel-pro. Who sells that kind. How tight should you get the bolts
Mike

I have a 460cid which are notorious for exhaust leaks. I fixed it with a gasket from (I think) Mr. Gasket. They told me that if I add an suffix A after their gasket part number that it would be made out of thicker, soft AL. You should call them to verify.

[horsehead]

Originally Posted by LindenBruce

A machine shop can surface the contact areas of the manifold. Then use clean bolts and Ultra Copper silicone sealant. Bruce

Right---a good machine shop should have a large belt sander to lay it on and get a good flat surface across. You could check them with a good straight edge also.

[EMT Customs]

Originally Posted by mwaller5672

I'm putting on my exhaust manifold and would like a gasket thicker than the fel-pro. Who sells that kind. How tight should you get the bolts
Mike

Had a similar situation on my '00 lightning exhaust. Got a set like this Percy's 66035 Percy's Seal-4-Good Header Gaskets= and cured the problem for good. And they are reusable to boot.

[tx65coupe]

The Percy's gaskets are nice. I'm using them with my JBA headers.